Murders can look very different
Part of the problem with trying to classify all murderers as mentally ill is that circumstances are very different. Firing on a crowd in a mass shooting is not the same as calculating murders the way serial killers do or killing someone in the heat of the moment while in a fit of rage.
Indeed, serial murders and mass murders are very different. So rather than trying to find a common thread, we must assess each case individually. These are some of the sinister findings behind some of the worst murders in the country.
Next: This famous murderer managed to get others to do his dirty work for him.